Borago borage
(For a dichotomous table for galls on Borago by Hans Roskam click here)
Dichotomous table for leafminers
1a mine very small, of indefinite shape = > 2
1b mine not unusually small, of constant shape => 3
1c galls, etc => Tables for all parasites per species
Dichotomous table for leafminers
1a mine very small, of indefinite shape = > 2
1b mine not unusually small, of constant shape => 3
1c galls, etc => Tables for all parasites per species
2a larva: below/behind the anus a chitinous comb: Cnephasia asseclana
2b anal comb absent: Cnephasia stephensiana
3a corridor from start to end: Chromatomyia horticola
3b eventually a large blotch => 2
4a initial corridor both very long and narrow; pupation within the mine; larva with recognisable head: Dialectica scalariella
4b initial corridor different; pupation external; larva a maggot => 5
5a larva solitary (always?): Agromyza myosotidis
5b larvae communal: Agromyza abiens
Not included in the key: Delia seideli.